Display screen or portion thereof with a graphical user interface



This application is related to U.S. Design patent application Ser. No. 29/524,726, filed Apr. 22, 2015, now U.S. Design Pat. No. D763,888; U.S. Design patent application Ser. No. 29/524,727, filed Apr. 22, 2015; U.S. Design patent application Ser. No. 29/524,728, filed Apr. 22, 2015, now U.S. Design Pat. No. D763,905; and U.S. Design patent application Ser. No. 29/524,730, filed Apr. 22, 2015, now U.S. Design Pat. No. D764,532, each of which is hereby incorporated by reference in its entirety.

FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface showing my new design;

FIG. 2 is a front view of a second embodiment thereof; and,

FIG. 3 is a front view of a third embodiment thereof.

The broken lines illustrate the display screen, portions of the graphical user interface, and portions of an electronic device. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface, substantially as shown and described. 